WO1997026632A1 - Arrangements in audiovisual fire detecting apparatus - Google Patents
Arrangements in audiovisual fire detecting apparatus Download PDFInfo
- Publication number
- WO1997026632A1 WO1997026632A1 PCT/NO1997/000013 NO9700013W WO9726632A1 WO 1997026632 A1 WO1997026632 A1 WO 1997026632A1 NO 9700013 W NO9700013 W NO 9700013W WO 9726632 A1 WO9726632 A1 WO 9726632A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- smoke
- volt
- flash
- light source
- light
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B7/00—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00
- G08B7/06—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00 using electric transmission, e.g. involving audible and visible signalling through the use of sound and light sources
Definitions
- the present invention relates to arrangements in audiovisual fire detecting apparatus in the form of a smoke/heat alarm device (below designated “smoke detector” only) , and a gleam- generating emergency light source interconnected thereto and adapted to be activated upon the activation of the smoke detector.
- the gleams or flashes thereof serve as guide light for socalled “smoke divers" (B.A. men, firemen working in conditions requiring breathing apparatus) in smoke-filled rooms or the like during fire, and the well tested release technique of the smoke detector is, thus, utilized in an advantageous way.
- the invention relates to a special use of a certain light as guiding light for B.A. firemen in smoke-filled rooms during fire.
- An audio-visual fire detecting apparatus of the kind defined introductorily is i.a. known from U.S. patent specification No. 5,177,461, where an apparatus has been disclosed, comprising a smoke detector in combination with a light source adapted, upon activation, to transmit flashes or gleams of ordinary, socalled "white" light.
- the flashing or gleaming light source is adapted to react on the activation of the smoke detector and, thus, utilizes the advantage of the well tested release device thereof, which in a way also acts as a release or activating means for the light source.
- flash-light as guide light for B.A. firemen in smoke-filled rooms or the like during a fire.
- flash-light created in a desired manner i.a. on the basis of noble gas (e.g. xenon, crypton)
- noble gas e.g. xenon, crypton
- the flash-light "cuts", without any undesired diffusion worth mentioning, through dense smoke and lights well up in utter darkness.
- the present invention consists in that the light source consists of a flash-light- generating means.
- a typical position for a smoke detector is adjacent the ceiling, e.g. outside a sleeping room door.
- a flash-light-generating means interconnected with a smoke detector will suitably be placed outside the sleeping room door, at or adjacent the floor, an electrical conduit connection between the two main components of the audio-visual fire detecting apparatus will, thus, extend itself substantially vertically.
- B.A. firemen will save a lot of valuable time in relation to known audio-visual fire detecting systems.
- the first minutes thereafter are usually the most decisive in respect of rescuring people in a burning building or the like.
- the invention's field of application is broad and comprises, apart from private residences, hotels, hospitals, old people's houses, ships, etc.
- the unit according to the invention comprising a means which upon the supply of electrical current is adapted to generate gleaming flash-light, is intended to have a simple construction and, thus, be capable of being delivered at a reasonable price.
- the unit must be adapted for interconnection with a fire detector/smoke detector of an existing type or any fire detector/smoke detector that might be developed subsequently, and which is subjected to constructive improvements only, without differing from basic principles of structure and function, wherein the release means adapted to react on smoke respectively a certain smoke density in the area of its positioning, and the capability of functioning thereof well tried out in the course of many years, normally will constitute a common release means for the smoke detector and the audio-visual fire detecting apparatus according to the invention.
- Said unit should contain a xenon flash lamp or another flash-light-generating means and an accumulator battery, e.g. a replaceable 9 volt battery of standard type.
- an accumulator battery e.g. a replaceable 9 volt battery of standard type.
- the audio-visual fire detecting apparatus being equipped with a plug to be inserted into a socket incorporated in the power supply network.
- battery change will become quite superfluous, as the connected fire detector is supplied with electrical current from the unit containing the flash-light source and a chargeable battery.
- the unit according to the invention may appropriately have a current so large that 2-5 smoke detectors can be operated, simultaneously as the battery is charged.
- the battery may run continuously on maintenance charge, as it never will be actual to charge a flat battery.
- the unit according to the invention is capable of functioning in minimum 30 minutes following power failure. This is decisive for the dimensioning of the battery which is common for the unit according to the invention and the smoke detector connected thereto.
- the unit according to the invention may have the same size as a double socket, and the frequency of flashing may e.g. be one time per second.
- one or more smoke detectors may be coupled. This detector or these detectors, respectively, must be intended for use at 9 volt or 12 volt, respectively, and, if more than one smoke detector is used for each unit, it will be equipped with contacts allowing the smoke detectors to be coupled in series.
- a thin conduit comprising three conductors may be used, of which two conductors are adapted for a voltage supply of 9 volt or 12 volt, respectively, the third conductor generating a signal added to +9 volt or +12 volt, respectively, when a smoke detector is released.
- the unit according to the invention must be adequately protected against high voltage, as it will arise very high voltages internally within the unit, so that appropriate measures must be taken in order to insulate charged conductors and parts.
- the unit shall normally be opened by a licensed electrician.
- the output for coupling the smoke detector to the apparatus must distinguish itself in a satisfactory way from the 220 volt power supply network according to NEMKO's rules and regulations.
- an audio-visual fire detecting apparatus in accordance with the invention shall be capable of functioning satisfactorily within a temperature range from about 0 to about 70°C.
- Figure 1 shows a highly simplified embodiment, as seen from above in relation to a mounting position (where it is imagined firmly screwed to a wall close to the floor) ;
- Figure 2 shows the same in a side elevational view.
- the finished unit will comprise one part including the electronics mounted on an attachment plate and a loose plastic cover 10 having a window put in position when the connections have been established.
- a bottom plate 12 incorporated within the unit according to the invention has holes 14 for attachment screws (not shown) .
- the three terminals having screw couplings for the connection of the smoke detector, not shown, are denoted at the reference numeral 16, and the two similar terminals for connection to the power supply network, at 18.
- a xenon lamp 20 constituting the flash-light source of the unit should have an extra cover (not shown) to shield against contact when the plastic cover 10 is removed.
- a print 22 is mounted on spacers 24 of plastic, fastened to the bottom plate 12.
- the size and circumference of the unit is decided by the 9 volt accumulator battery's 26 dimensions.
- the electronics of the unit is very simple. During production it will be suitable to combine all electronics on one print, with both charger and flasher.
- An appropriate gleaming/ flashing device may consist of a highfrequency DC-DC- converter generating a voltage of about 100-200 volt, and a circuit for discharging e.g. each second through the xenon lamp or a lamp containing another flash-light-generating noble gas.
- the lamp 20 is released by a very high voltage (several thousand volt) generated by a transformer incorporated into the unit according to the invention.
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP97902758A EP0875051A1 (en) | 1996-01-19 | 1997-01-15 | Arrangements in audiovisual fire detecting apparatus |
AU16772/97A AU1677297A (en) | 1996-01-19 | 1997-01-15 | Arrangements in audiovisual fire detecting apparatus |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NO960230A NO960230L (en) | 1996-01-19 | 1996-01-19 | The fire alarm apparatus |
NO960230 | 1996-01-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1997026632A1 true WO1997026632A1 (en) | 1997-07-24 |
Family
ID=19898951
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/NO1997/000013 WO1997026632A1 (en) | 1996-01-19 | 1997-01-15 | Arrangements in audiovisual fire detecting apparatus |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0875051A1 (en) |
AU (1) | AU1677297A (en) |
NO (1) | NO960230L (en) |
WO (1) | WO1997026632A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000022588A1 (en) * | 1998-10-15 | 2000-04-20 | Acbond Limited | Improvements in and relating to electrical accessories |
WO2001097188A1 (en) * | 2000-06-14 | 2001-12-20 | Kaiser Richard A | Multi-functional smoke detector and signal device |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4155081A (en) * | 1977-10-25 | 1979-05-15 | Honeywell Inc. | Rechargeable battery backup power source for an ionization smoke detector device |
US4283657A (en) * | 1976-03-25 | 1981-08-11 | Lampiridae Associates | Exit illuminating system |
US4422069A (en) * | 1980-10-17 | 1983-12-20 | Edstroem Karl L | System for indicating an emergency exit |
US4649376A (en) * | 1984-06-19 | 1987-03-10 | Richard Frank | Visual fire alarm apparatus |
US4668935A (en) * | 1982-12-22 | 1987-05-26 | Mcdermott Julian A | Visual alarm reliability assurance system |
US5019805A (en) * | 1989-02-03 | 1991-05-28 | Flash-Alert Inc. | Smoke detector with strobed visual alarm and remote alarm coupling |
-
1996
- 1996-01-19 NO NO960230A patent/NO960230L/en unknown
-
1997
- 1997-01-15 AU AU16772/97A patent/AU1677297A/en not_active Abandoned
- 1997-01-15 EP EP97902758A patent/EP0875051A1/en not_active Withdrawn
- 1997-01-15 WO PCT/NO1997/000013 patent/WO1997026632A1/en not_active Application Discontinuation
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4283657A (en) * | 1976-03-25 | 1981-08-11 | Lampiridae Associates | Exit illuminating system |
US4155081A (en) * | 1977-10-25 | 1979-05-15 | Honeywell Inc. | Rechargeable battery backup power source for an ionization smoke detector device |
US4422069A (en) * | 1980-10-17 | 1983-12-20 | Edstroem Karl L | System for indicating an emergency exit |
US4668935A (en) * | 1982-12-22 | 1987-05-26 | Mcdermott Julian A | Visual alarm reliability assurance system |
US4649376A (en) * | 1984-06-19 | 1987-03-10 | Richard Frank | Visual fire alarm apparatus |
US5019805A (en) * | 1989-02-03 | 1991-05-28 | Flash-Alert Inc. | Smoke detector with strobed visual alarm and remote alarm coupling |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000022588A1 (en) * | 1998-10-15 | 2000-04-20 | Acbond Limited | Improvements in and relating to electrical accessories |
WO2001097188A1 (en) * | 2000-06-14 | 2001-12-20 | Kaiser Richard A | Multi-functional smoke detector and signal device |
Also Published As
Publication number | Publication date |
---|---|
NO960230D0 (en) | 1996-01-19 |
AU1677297A (en) | 1997-08-11 |
NO960230L (en) | 1997-07-21 |
EP0875051A1 (en) | 1998-11-04 |
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